Integrating 5 × 5 Dammann gratings to detect orbital angular momentum states of beams with the range of -24 to +24

Shiyao Fu; Tonglu Wang; Shikun Zhang; Chunqing Gao

doi:10.1364/AO.55.001514

Integrating 5 × 5 Dammann gratings to detect orbital angular momentum states of beams with the range of -24 to +24

Shiyao Fu, Tonglu Wang, Shikun Zhang, Chunqing Gao^*

^*Corresponding author for this work

School of Optics and Photonics

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

49 Citations (Scopus)

Abstract

The 5×5 2D binary Dammann vortex grating can distribute energy among different diffraction orders equally and can realize measurement of orbital angular momentum (OAM) states from -12 to +12. Here we combine a 5×5 Dammann vortex grating and a spiral phase plate with the order +12 or -12, which makes the topological charge of beams in the array increase or decrease by 12; thus, the range of measuring OAM states can be extended to a range from -24 to +24. We upload the holograms of such gratings on a liquid crystal spatial light modulator to do the experiment. The experimental results fit well with the simulation results. This method is also effective for multiplexed OAM beams and can be used in optical communications in the future.

Original language	English
Pages (from-to)	1514-1517
Number of pages	4
Journal	Applied Optics
Volume	55
Issue number	7
DOIs	https://doi.org/10.1364/AO.55.001514
Publication status	Published - 1 Mar 2016

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abstract = "The 5×5 2D binary Dammann vortex grating can distribute energy among different diffraction orders equally and can realize measurement of orbital angular momentum (OAM) states from -12 to +12. Here we combine a 5×5 Dammann vortex grating and a spiral phase plate with the order +12 or -12, which makes the topological charge of beams in the array increase or decrease by 12; thus, the range of measuring OAM states can be extended to a range from -24 to +24. We upload the holograms of such gratings on a liquid crystal spatial light modulator to do the experiment. The experimental results fit well with the simulation results. This method is also effective for multiplexed OAM beams and can be used in optical communications in the future.",

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AU - Fu, Shiyao

AU - Wang, Tonglu

AU - Zhang, Shikun

AU - Gao, Chunqing

PY - 2016/3/1

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N2 - The 5×5 2D binary Dammann vortex grating can distribute energy among different diffraction orders equally and can realize measurement of orbital angular momentum (OAM) states from -12 to +12. Here we combine a 5×5 Dammann vortex grating and a spiral phase plate with the order +12 or -12, which makes the topological charge of beams in the array increase or decrease by 12; thus, the range of measuring OAM states can be extended to a range from -24 to +24. We upload the holograms of such gratings on a liquid crystal spatial light modulator to do the experiment. The experimental results fit well with the simulation results. This method is also effective for multiplexed OAM beams and can be used in optical communications in the future.

AB - The 5×5 2D binary Dammann vortex grating can distribute energy among different diffraction orders equally and can realize measurement of orbital angular momentum (OAM) states from -12 to +12. Here we combine a 5×5 Dammann vortex grating and a spiral phase plate with the order +12 or -12, which makes the topological charge of beams in the array increase or decrease by 12; thus, the range of measuring OAM states can be extended to a range from -24 to +24. We upload the holograms of such gratings on a liquid crystal spatial light modulator to do the experiment. The experimental results fit well with the simulation results. This method is also effective for multiplexed OAM beams and can be used in optical communications in the future.

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Integrating 5 × 5 Dammann gratings to detect orbital angular momentum states of beams with the range of -24 to +24

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